Throwing Error on Optional Chaining (TS 3.7.2)

[flatherskevin]

Summary

Prettier VSCode plugin is failing on new TypeScript in version 3.7.2 syntax (specifically optional chaining). Prettier 1.19.1 was release on 11/8/2019 adding support prettier/prettier#6469

Steps To Reproduce:

1. Add optional chaining syntax x?.y to a TS file
2. Attempt to auto-format the TS file
3. Check the Output window of VSCode, and there will be an error of Expression expected pointing to the ?.
4. Auto-format fails

Expected result

No error should be thrown, and auto-format should succeed

Actual result

See steps to reproduce

VS Code Version: 1.40.0

Prettier & Prettier Plugin Version: 1.19.1 and 2.3.0 respectively

OS and version: macOS 10.14.6

[flatherskevin]

#1025 related. Just saw this automated PR is out but failing

[flatherskevin]

As a note, v3.1.0 of the plugin (which is in preview) does successfully work with TS v3.7.2

[ntotten]

Version 3.0 is now released to the normal extension location.

[riesvriend]

VSCode is still on 3.6.x, you need to force it to use the locally installed typescript in node_modules (to 3.7.2), see https://code.visualstudio.com/docs/typescript/typescript-compiling#_using-newer-typescript-versions

[github-actions]

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